It sounds dumb, but the biggest thing for us with 5.4 is the ability to add memory without an IPL. Also the increase in memory supported from 128 to 256. MA
On Tue, Oct 21, 2008 at 11:58 AM, Colin Allinson <[EMAIL PROTECTED]> wrote: > > This is just my own observation. > > We have been very early adopters of z/VM 5.1, 5.2, 5.3, & 5.4. > > Admittedly, we do have some very specific requirements but I have to say > that our experience is that each succeeding version has become more reliable > and issue free. This is hardly surprising when you think the 64bit > processing was introduced with this series and has become more stable and > mature with each succeeding level. > > We now have 5.4 fully deployed and it has been the most trouble free upgrade > of them all. > > However, having said that, if you take my advice you will initially build > your 5.4 system on a separate 6 pack stand-alone system and then start by > just implementing the CP Module alongside your current one on the PARM DISK. > That way you can fall forward/back until you are confident to stay. The only > issue with this approach is if you have RACF. Then you need to do your RACF > update in sync with your CP update. > > > > Colin Allinson > > Amadeus Data Processing GmbH >
